Add MachOImageSymbolTableReader and hook it up to MachOImageReader

util/util.gyp

 # Copyright 2014 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 24 matching lines @@
         'mac/checked_mach_address_range.cc',
         'mac/checked_mach_address_range.h',
         'mac/launchd.h',
         'mac/launchd.mm',
         'mac/mac_util.cc',
         'mac/mac_util.h',
         'mac/mach_o_image_reader.cc',
         'mac/mach_o_image_reader.h',
         'mac/mach_o_image_segment_reader.cc',
         'mac/mach_o_image_segment_reader.h',
+        'mac/mach_o_image_symbol_table_reader.cc',
+        'mac/mach_o_image_symbol_table_reader.h',
         'mac/service_management.cc',
         'mac/service_management.h',
         'mac/process_reader.cc',
         'mac/process_reader.h',
         'mac/process_types.cc',
         'mac/process_types.h',
         'mac/process_types/all.proctype',
         'mac/process_types/crashreporterclient.proctype',
         'mac/process_types/custom.cc',
         'mac/process_types/dyld_images.proctype',
@@ skipping 105 matching lines @@
     },
     {
       'target_name': 'util_test_multiprocess_exec_test_child',
       'type': 'executable',
       'sources': [
         'test/multiprocess_exec_test_child.cc',
       ],
     },
   ],
 }